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AM79C976

Part Number	AM79C976
Manufacturer	Advanced Micro Devices
Description	PCnet-PRO 10/100 Mbps PCI Ethernet Controller
Published	Mar 26, 2005
Detailed Description	PRELIMINARY Am79C976 PCnet-PRO™ 10/100 Mbps PCI Ethernet Controller DISTINCTIVE CHARACTERISTICS s Integrated Fast Ether...
Datasheet	AM79C976 PDF File

Overview

PRELIMINARY Am79C976 PCnet-PRO™ 10/100 Mbps PCI Ethernet Controller DISTINCTIVE CHARACTERISTICS s Integrated Fast Ethernet controller for the Peripheral Component Interconnect (PCI) bus — 32-bit glueless PCI host interface — Supports PCI clock frequency from DC to 33 MHz independent of network clock — Supports network operation with PCI clock from 15 MHz to 33 MHz — High performance bus mastering architecture with integrated Direct Memory Access (DMA) Buffer Management Unit for low CPU and bus utilization — PCI specification revision 2.
2 compliant — Supports PCI Subsystem/Subvendor ID/Vendor ID programming through the EEPROM interface — Supports both PCI 3.
3-V and 5.
0-V signaling environments — Plug and Play compatible — Uses advanced PCI commands (MWI, MRL, MRM) — Optionally supports PCI bursts aligned to cache line boundaries — Supports big endian and little endian byte alignments — Implements optional PCI power management event (PME) pin — Supports 40-bit addressing (using PCI Dual Address Cycles) s Media Independent Interface (MII) for connecting external 10/100 megabit per second (Mbps) transceivers — IEEE 802.
3-compliant MII — Intelligent Auto-Poll™ external PHY status monitor and interrupt — Supports both auto-negotiable and non autonegotiable external PHYs — Supports 10BASE-T, 100BASE-TX/FX, 100BASE-T4, and 100BASE-T2 IEEE 802.
3compliant MII PHYs at full- or half-duplex s Full-duplex operation supported with independent Transmit (TX) and Receive (RX) channels s Includes support for IEEE 802.
1Q VLANs — Automatically inserts, deletes, or modifies VLAN tag — Optionally filters untagged frames s Provides optional flow control features — Recognizes and transmits IEEE 802.
3x MAC flow control frames — Asserts collision-based back pressure in half-duplex mode s Provides internal Management Information Base (MIB) counters for network statistics s Supports PC97, PC98, PC99, and Net PC requirements — Implements full OnNow features including pattern matching and link s...

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